Well drill



Nov. 20 1923.

J. B. FENDER WELL DRILL Filed Feb. 15. 1922 3 Sheets-Sheet 1 J. BxFENDER Nov. 20

WELL DRILL Filed Feb. 15 1 1922 5 Sheets-sheaf WELL DRILL Filed Feb. 15, 1922 5 Sheets-$heet 5 gwwnhw Patented Nov. 20, 1923.

wire star JOHN B. FENDER, F KAUFMAN, TEXAS.

WELL DRILL.

Application filed February 15. 1922. Serial No. 536,745.

To all whom 2'1 may concern:

Be it known that l. Ions Bnowx FENDER,

a citizen of the l nited States. residing at Kaufman. in the county, of Kaufman and State of Texas, have invented a new and useful ell Drill, of which the following is a specification.

This invention relate to well drilling apparatus, the primary object of the invention being to provide means for under reaming the well tubing to permit the same to be inserted in the well with facility.

Another object of the invention is to provide means for forcing the tool laterally from its support, to cause one end of the tool to extend beyond the wall of the well tubing to accomplish the under reaming result.

A still further object of the invention is the provision of means for forcing the material cut by forming the well, from the well.

With the foregoing and other objects in view which will appear as the description 2 proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described-and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings Figure 1 is a longitudinal sectional view through a well casing and disclosing a drill constructed in accordance with the present invention as positioned therein.

Figure 2 is a sectional view through the drill casing.

Figure 3 is a sectional view through the drill casing and taken at right angles to Figure 2.

Figure 4c is a sectional view line 4-4 of Figure 1.

Figure 5 is a sectional view' line 55 of Figure 1.

Figure 6 is a sectional vlew line 66 of Figure 1.

Referring to the drawings in detail, the drill is shown as positioned within the well casing 5, which is of the usual construction, and which is forced into the well during the drilling operation.

The drill proper embodies a tubular casing 6 which is of a diameter to closely fit taken on taken on taken on within the well casing 5 so that lateral movement thereof within the well casing will be prevented. The upper end of the casing'ti is closed as by means of the wall 7 which is formed with a suitable opening to accommodate the discharge pipe 8 which leads from the base of the well to the upper surface of the well and discharges material cut by the drill. The lower end of the casing 6 is open and is supplied with a supporting ring 9 that is formed with an inwardly extending flange 10 partially closing one end of the discharge pipe 8, so that material will he directed into the pipe, the ring 9 also acting as a support for the lower end of the pipe 8 as shown by Figure 2 of the drawings.

Secured within the casing 6 at a point adjacent to the lower end thereof, is a spacing disk 11 which is formed with an opening 12 to accommodate the pipe 8, the spacing disk being also formed with openings 13 to provide communication between the compartments formed by the disks which are supported within the housing 6.

Above the disk 11 is positioned a disk 14 which is also formed with an opening to receive the pipe 8, the disk 14 being also formed with openings 15 to provide coinmnnication between the upper portion of the casing 6, and the space between the disks 11 and 14-.

Extending into the well casing, and having its lower end disposed within the drill casing 6, is an air supply pipe 16 which has its lower end in communication with the cylinder 17, as through the pipe 18, the pipe 18 being connected to the pipe 16 as by means of the coupling 19.

Operating within the cylinder 17, is a plunger 20, which plunger has connection with the rod 21 that has its lower end pivotally connected with one end of the bell crank lever 23 as at 22, the bell crank lever 23 being pivotally supported within the drill casing as at 25.

The bell crank lever also connects with a laterally extending arm 26' which in turn has connection with the rod 27, to move therewith. (arried at the lower end of the rod 27 is the blade 2i so constructed that it will move laterally when the rod 27 and rod 21 are moved longitudinally of the casin Carried at the upper end of the rod 27 1s a knuckle joint 29, the upper section of the knuckle joint having connection with the rod which has connection with the plunger 31 of a piston, of the usual and well known .onstruction, the cylinder in which the piston- 31 operates being indicated at 32 and supplied with air through. the pipe 33, which is in communication with a suitable source of compressed air supply.

The drill blade 24: operates within a suitable guideway formed by the spaced members 34 and 35, so that the operation of the drill will cause the same to more laterally, eliminating all possibility of the drill twisting, should the same meet with an obstruction during this operation.

In order that the disks 11 and 14 and sup-- porting ring 9 will be held in suitable spaced relation with each other, spacing rods 36 are provided, which have connection with the dish 1a andyrringQ, the intermediate portions of the rods passing through suitable openings in. the disk 11 as clearly shown by Figure 301' the drawings.

The operation of the device is as follows: iyli'iien a suitable opening in the ground surface has been formed, the well casing to- 7 gether with the drill casing 6, is dropped thereinto.

Air is now admitted to the cylinder 17 through the pipe 18, causing the rod 21 to move downwardly with the result that the blade 24 is swung laterally. one end i 7 thereof, extending beyond the wall of the well casing 5, as clearly shown by Figure 1 of the drawings.

With the blade 24 in this position, the casing 5 is rotated by suitable means not shown, to the end that the cutting element 24 scrapes the surface directly under the well casing, forcing the material upwardly through the discharge pipe 8.

While the drill and drill casing are being rotated, air is admitted to the air hammer to the end that the cutting element is operated: When it is desired to remove the drilling apparatus, it is only necessary to relievethe air pressure within the cylinder 17, to the end that the cutting element 24 is moved within the drill casing 6, and takes a position as shown by Figure 2 of the draw- 1ns.

all may now be admitted to the interior of the drill casing, to the end that the material is forced upwardly through the; pipe 8 and discharged at the top of the well.

Having thus described the invention, what is claimed as new is l. A well drilling apparatus comprising in combination with a well casing, a drill casing positioned within the well casing, means tor supporting an air hammer within the drill casing. a cutting blade having connection with the air hammer, means for I tion thereof, beyond one wall of the well casing, and means for reciprocating the blade.

3. A well drilling apparatus comprising in combination with a well casing, a drill casing positioned within the well casing, supporting disks-within the drill casing, a pipe extending through. the supporting disks and having an inwardly extending flange disposed at the base thereof to direct material into the pipe, a cutting blade, means for extending the cutting blade to a position beyond the wall of the well casing, and means for reciprocating the cutting blade vertically.

4. A well drilling apparatus comprising in combination with a well casing, a drill easing supported within the well casing, a cylinder within the drill casing, a plunger operating within the cylinder, a cutting blade pi'vo-tally supported within the drill casing and having connection with the plunger, said. cutting blade adapted to be moved laterally to extend beyond one wall of the well casing, and means for reciprocating the cutting blade.

5. A well drilling apparatus comprising in combination with a well casing, a drill casing supported within the well casing, a discharge pipe extending through the drill casing, means disposed at the base of the discharge pipe for directing material therethrough, a cutting blade pivotally supported within the drill casing and adapted to be moved laterally, and means for reciprocating the blade.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

JOHN B. FENDER.

Witnesses:

W. DORSEY BROWN, L. D. RUNNELS. 

